Fatal error: Uncaught mysqli_sql_exception: You have an error in your SQL syntax; check the manual that corresponds to your MySQL server version for the right syntax to use near '' at line 1 in /home/ispconn3/ispconnect/pathannetwork/hotspot/hotspot_voucher_client_status_update.php:7 Stack trace: #0 /home/ispconn3/ispconnect/pathannetwork/hotspot/hotspot_voucher_client_status_update.php(7): mysqli_query() #1 {main} thrown in /home/ispconn3/ispconnect/pathannetwork/hotspot/hotspot_voucher_client_status_update.php on line 7